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v3.23.1

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 01, 2022 | Sep. 30, 2022 | May 02, 2019 | Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common Stock, Shares Authorized | 100,000,000 |  | 100,000,000 |  |  | 100,000,000 |  |
Treasury Stock Acquired, Average Cost Per Share | $ 34.97 | $ 49.00 | $ 31.05 | $ 46.81 |  |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  | 19,347 | 45,198 |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 40,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | 608,610 |  | 608,610 |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  |  |  |  | 1,000,000 | 1,500,000
Treasury Stock Acquired, Average Cost Per Share | $ 34.97 | $ 49.00 | $ 31.05 | $ 46.81 |  |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  | 19,347 | 45,198 |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense | $ 0 | $ 36 | $ 25 | $ 71 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 0 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 266 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  | 13,373 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 0 |  | 0 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 266 |  |  |  |  |
Phantom Share Units (PSUs) [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense | $ 94 | 96 | $ 190 | $ 193 |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  |  | 83,540 |  |  |  |
us-gaap_PhantomShareUnitsPSUsMember_Employees |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense | $ 958 | $ 864 | $ 1,740 | $ 1,632 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 130,739 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 12,885 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  | 71,013 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 362,802 |  | 362,802 |  |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  | 71,013 | 73,627 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 12,885 |  |  |  |  |
Share-Based Payment Arrangement, Option |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  | 2,000 |  |  |  |  |
Equity Incentive Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized | 3,000,000.0 |  | 3,000,000.0 |  |  |  |  |
Repurchase Agreements [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired | 4,048 | 2,587 | 223,779 | 59,002 |  |  |  |

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